Welcome to the Google PubSubHubbub Hub!

In addition, this hub conforms to the
Pubsubhubbub 0.3 specification with the exception of permanent subscriptions. Because
of this you will need to refresh each of your subscriptions periodically,
ideally just before hub.lease_seconds elapse since the last
successful subscription.

Use this hub with your feeds

Add an //atom:link tag under //atom:feed for
Atom feeds or under //rss:rss/channel for RSS feeds. The
//atom:link tag should have rel attribute set to
hub and href attribute set to
https://pubsubhubbub.appspot.com/

Alternatively, your feed can be served with two Link headers:

one with rel attribute set to hub and
href attribute set to https://pubsubhubbub.appspot.com/

one with rel attribute set to self and
href attribute set to the feed URL of the feed

Whenever new content is added to a feed, notify the hub. This is
accomplished by sending a POST request to
https://pubsubhubbub.appspot.com/ with
Content-Type: application/x-www-form-urlencoded and two parameters
encoded in the body:

hub.mode equal to publish

hub.url equal to the feed URL of the feed that has been
updated. This field may be repeated to indicate multiple feeds that
have been updated

Hub debug

These legal disclaimers are here because this hub is run by Google as
a service. If you don't want to agree to these terms you can use a
different hub or even run your own. The PubSubHubbub protocol is
decentralized and free.